/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.spark.util;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicBoolean;

public class SparkThreadPoolUtil {
  private static final ExecutorService GC_THREAD_POOL =
      ThreadUtils.newDaemonSingleThreadExecutor("gc-thread-pool");

  private static final AtomicBoolean PERFORMING_GC = new AtomicBoolean(false);

  public static void triggerGCInThreadPool(Runnable callback) {
    if (PERFORMING_GC.compareAndSet(false, true)) {
      GC_THREAD_POOL.submit(
          new Runnable() {
            @Override
            public void run() {
              try {
                callback.run();
              } finally {
                PERFORMING_GC.set(false);
              }
            }
          });
    }
  }
}
